CLEARWATER, Fla., Nov. 18 (UPI) -- Thousands of Scientologists have attended the unveiling of a multimillion-dollar building in a Florida city that is a hub for the religion, officials say.

After 12 years of stop-and-start construction, the Flag Building in downtown Clearwater was opened by church leader David Miscavage in a ceremony that lasted less than 10 minutes, the Tampa Tribune reported Monday.

Estimates of the number of church members at the grand opening ranged from less than 6,000 to about 10,000.